PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2026
·
IF 7.9
Fei Yan,Wenhui You,Guangle Zhou,Lina Wei,Xiaolong Yang,Luao Wu,Jun Ke,Lidong Wang
This study synthesized Co 3 O 4 by calcining ZIF-67, and further prepared Co 3 O 4 -V O -3 catalyst rich in oxygen vacancies through NaBH 4 reduction. Co 3 O 4 -V O -3 can activate peroxymonosulfate (PMS) to efficiently degrade acetaminophen (APAP). The experimental results indicate that the optimal dosage of NaBH 4 for reducing Co 3 O 4 is 1:1, and the optimal reduction time is 3 h. Under the reaction conditions of 25 °C and pH= 7, 0.1 g/L Co 3 O 4 -V O -3 can degrade over 98.5% of APAP within 5 min, which is much faster than the activity of the original Co 3 O 4 catalyst. XPS analysis showed that the content of Co 2+ and oxygen vacancies in Co 3 O 4 -V O -3 was significantly higher than that in Co 3 O 4 , indicating that the reduction treatment of NaBH 4 resulted in the generation of a large number of oxygen vacancies in Co 3 O 4 . Co 3 O 4 -V O -3 has good environmental tolerance and can maintain good performance in a wide pH range (5−11) and under the interference of various inorganic anions. The results of free radical quenching experiments and EPR tests indicate that multiple reactive oxygen species are generated in the Co 3 O 4 -V O -3/PMS system, among which O 2 •− and 1 O 2 contribute the most to the degradation of APAP. This study provides an efficient and environmentally tolerant catalyst for activating PMS to degrade APAP, providing a reliable option for the removal of recalcitrant pollutants in actual water bodies.
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DOI
高影响因子
Molecular Catalysis
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2026
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IF 4.3
Tao Yao,Miaolian Ma,Chengke Wang,Wanpeng Zhou,Maofeng Zhang
A novel metal-free catalyst is used for fast H 2 generation from NaBH 4 methanolysis. • Reaction kinetics order of resveratrol-catalyzed NaBH 4 methanolysis was identified. • The E a was calculated to be 25.69 kJ/mol within the temperature range of 248∼288 K. • Resveratrol as catalyst exhibits excellent reusability and regeneration performance. In this study, natural polyphenolic compounds (including resveratrol, naringenin, hesperetin, and tea polyphenol) were employed as catalysts for hydrogen production from methanolysis of NaBH 4 , and the reaction conditions were systematically investigated. The effects of catalyst type, NaBH 4 concentration, catalyst dosage, and reaction temperature on the catalytic performance were examined individually. The results demonstrated that resveratrol exhibited the best catalytic activity. At 25 °C, with 0.05 g of resveratrol as the catalyst for methanolysis of 0.1 g NaBH 4 , the hydrogen generation rate (HGR) reached up to 3926 mL H 2 g cat −1 min −1 . Even at -25 °C, the HGR value could reach 420 mL H 2 g cat −1 min −1 , indicating favorable low-temperature catalytic performance. The activation energy for methanolysis of NaBH 4 catalyzed by resveratrol was calculated to be 25.69 kJ mol −1 over the temperature range of -25 to 15 °C. Reusability and regeneration tests showed that the catalyst retained high activity after five consecutive cycles. Download: Download high-res image (180KB) Download: Download full-size image
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
·
IF 4.084
Fanghui Wang,Yimeng Luo,Yanan Wang,Hong Zhu
In this work, a spherical spider web-like structure Ru Ni/Ni foam catalyst was prepared for hydrogen evaluation from sodium borohydride (NaBH 4 ) by a combination of electroless plating and electroplating. Microstructure, surface morphology , surface area and elemental composition of the Ru Ni/Ni foam catalyst were analyzed by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM-EDS and X-ray Photoelectron Spectroscopy (XPS), Brunauere-Emmette-Teller method (BET, AS-1C-VP), respectively. The influences of Ru Ni with different molar ratios , NaOH concentration, NaBH 4 concentration, and solution temperature on the hydrogen production rate were investigated in this paper. The results showed that the Ru Ni metals were arrayed densely and uniformly on the surface of Ni foam. The average hydrogen production rate is 360 mL min −1 g −1 in 20 wt % of NaBH 4 , 1 wt% of NaOH at 30 °C in the presence of the Ru Ni/Ni foam catalysts. The calculated activation energy was 39.96 kJ mol −1 for hydrogen production from sodium borohydride using the Ru Ni/Ni foam catalyst.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2023
·
IF 4
Lu Danli,He Zhiping,Liu Weiliang
In this work, a novel NiCo/ZIF-67/rGO catalyst was prepared via a facile impregnation-reduction method, followed by comprehensive characterization using XRD, SEM, TEM, XPS, and ICP-OES techniques. This catalyst featured a hierarchical porous support consisting of Zeolitic Imidazolate Framework-67 (ZIF-67) with a high specific surface area and reduced graphene oxide (rGO) with considerable electronic conductivity, along with strong synergistic interactions between Ni and Co species as well as between the deposited metals and the carbon in rGO. The NiCo/ZIF-67/rGO catalyst exhibited excellent activity in catalyzing the hydrolysis of NaBH 4 , resulting in a low activation energy ( E a ) of 21.08 kJ mol −1 and a high turnover frequency (TOF) value of 5420 \(mL_{{\textit{H}}_\text{2}}g_\textit{M}^{-1}\min^{-1}\) . The hydrogen generation rate was increased by nearly double after five cyclic experiments, demonstrating the exceptional catalytic durability of NiCo/ZIF-67/rGO. The as-prepared NiCo/ZIF-67/rGO catalyst exhibits the advantages of cost-effectiveness, durability, and superior performance for NaBH 4 hydrolysis, rendering it a promising candidate for industrial applications.
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DOI
高影响因子
CHEMOSPHERE
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2019
·
IF 5.108
Jiajun Long,Longqian Xu,Linghui Zhao,Huaqiang Chu,Yunfeng Mao,Deli Wu
In this study, Cu(0) was synthesized with NaBH 4 as a reducing agent for Cu(II) and used to activate dissolved molecular oxygen (O 2 ) under acidic conditions. The Cu(0) synthesized had much higher activity than the purchased. The roles of Cu was clarified and the formation of reactive oxygen species was discussed through direct detection for the first time. By detecting the valence change of Cu in a CuO system, Bisphenol A (BPA) was found to accelerate the transformation of Cu(II) to Cu(I). Besides, the evidence from electron spin resonance (ESR) studies and scavenging tests revealed the new roles of Cu(0) that Cu(0) could not only convert O 2 to produce ·O 2 − , but also catalyze H 2 O 2 to ·OH. The results from this study offer evidence of new reaction pathways in Cu-activated O 2 systems and deepen understanding of the reaction between Cu species and O 2 .
研究领域:
环境科学
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化学
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材料科学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Luyan Shi,Chenxi Shang,Ke Zhu,Fengli Wei,Bin Wu,Tayirjan Taylor Isimjan,Xiulin Yang
The development of efficient and long-lasting catalysts for hydrogen generation is vital for advancing innovations in clean energy technologies. In this study, we synthesized and characterized Co 2 B-MoB 2 /CMO, a crystalline/amorphous heterointerface catalyst, for sodium borohydride (NaBH 4 ) hydrolysis, achieving a high hydrogen generation rate of 7364.3 mL min –1 g –1 at 298 K. The activation energy of 44.4 kJ mol –1 was lower than that of most reported catalyst. Both experimental and theoretical analyses demonstrate that Co defects and the interfacial regions between crystalline and amorphous phases in Co 2 B-MoB 2 /CMO are essential in integrating critical factors, such as a high concentration of unsaturated coordination sites. These features not only alter the surface electronic properties but also enhance the adsorption of H 2 O molecules and promote the dissociation of the BH 4 – , thereby optimizing catalytic performance. In addition, the NaBH 4 hydrolysis hydrogen production system based on this catalyst successfully drove a hydrogen-air fuel cell and lit up a small light bulb, demonstrating its potential in practical applications.
研究领域:
催化
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氢能
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材料科学
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可再生能源
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纳米材料
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电化学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Junfeng Yang,Jinsong Lu,Liangsheng Xie,Jingfeng Wu,Yu Wen,Qin Zhang
Herein, the SrTiO 3 -TiO 2 -CaTiO 3 /Cu 2 O quaternary composite has been designed and prepared via one-step hydrothermal process followed by a NaBH 4 reduction treatment. By comparing the H 2 production rate (HPR) of Sr-Ti-Ca/Cu samples prepared by different Cu sources, it is found that Sr-Ti-Ca/Cu has the best H 2 production performance when CuCl 2 is as Cu source. As expected, the highest HPR of Sr-Ti-Ca/Cu sample is up to 5.088 mmol g −1 h −1 , which is 195.7 times as higher as that of the Sr-Ti-Ca sample (0.026 mmol g −1 h −1 ) under the same conditions. Moreover, the HPR reached 0.692, 0.530 and 0.647 mmol g −1 h −1 in tap water, lake water and river water, indicating that the photocatalyst has high practicability in natural water sources. In addition, the experiment of the tap water composition effect on H 2 production performance shows that NO 3 − and SO 4 2− ions have great negative influence on the HPR. Compared with Sr-Ti-Ca, the light absorption of Sr-Ti-Ca/Cu extends over the entire visible region, the interface resistance decreases, and the photocurrent density increases. These results suggest that the well-designed dual p-n heterojunctions and dual type-II heterojunctions in Sr-Ti-Ca/Cu sample can enhance the light absorption in the ultraviolet region and realize the rapid separation and migration of photogenerated charge, thereby accelerating the production of H 2 . This work shows the strong advantage and potential of non-precious metal efficient photocatalyst system for producing H 2 from deionized water and natural fresh water.
研究领域:
材料科学
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化学
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环境科学
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能源
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
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2023
·Vol. 10
·期 3
·1953-1965
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IF 1.5
Zhong Wang,Zhenhua Yan,Min Wang,Jinsheng Zhao
The high cost and insufficient catalytic activity of carbon-supported Pt nanoparticle catalysts are two main problems in the commercial deployment of microbial fuel cell (MFC). In an effort to address these barriers, three carbon-supported Pt-Ni alloy electrocatalysts with varying Pt:Ni atom ratios (Pt 3 -Ni/C, Pt 2 -Ni/C, Pt-Ni/C) were prepared by simple NaBH 4 reduction in glycerol at room temperature. All of the prepared Pt-Ni alloy nanoparticles (NPs) are highly dispersed on a carbon support and show a single-phase face-centered cubic structure with a particle size of 2.4-3.0 nm. The electrocatalytic performances of the synthesized Pt-Ni alloy catalysts were compared with that of commercial Pt/C by cyclic voltammetry and linear sweep voltammetry; among these NPs, the Pt 2 -Ni/C catalyst exhibits the highest activity for oxygen reduction reaction (ORR) in 0.1M HClO 4 . As the cathode catalyst, the maximum power density produced from MFC with Pt 2 -Ni/C (1724 mW m -2 ) was 22% higher than that with commercial Pt/C (1413 mW m -2 ).
研究领域:
材料科学
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电化学
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能源技术
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纳米材料
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催化
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Qing Guo,Xiulin Wang,Fan Yang,Shuhui Zhou,Kexin Wei,Yu Zhang,Li Sun,Siyuan Sun,Hongchen Liu,Junpu An,Yang Sun,Peidi Shen,Yongfeng Li
Rational design and preparation of single-atoms (SAs) catalysts with high atom efficiency and anion intercalation offer a promising way to enhancing the catalytic activity of sodium borohydride (NaBH 4 ) hydrolysis. Herein, Pt SAs loaded on borate anion-intercalated Co(OH) 2 nanoflakes (Pt/Co(OH) 2 -B) were synthesized by boron-assisted method and wet impregnation method, achieving a massive metal loading of 9.8 % for the Pt SAs through the oxidation of Co(OH) 2 -B. The optimal catalyst loaded with 6.1 % Pt SAs (Pt M /Co(OH) 2 -B) has a turnover frequency (TOF) of 956.34 mol H2 min - 1 mol Pt -1 , a hydrogen generation rate (HGR) of 9315 mL min - 1 g -1 cat at 30 °C, and a low activation energy of 47.31 kJ mol - 1 for NaBH 4 hydrolysis, outperforming most of the reported noble metal catalysts. The Co element attracts the electrons of Pt SAs, causing Pt SAs to be in an electron-deficient state, which accelerates the adsorption of H 2 O and promotes the hydrolysis rate of NaBH 4 . The remarkable performance is primarily attributed to the synergistic interaction between Pt SAs and α-Co(OH) 2 -B, with a slight shift in the d-band center optimizing the electronic structure of the hydrolysis reaction and reducing the binding energy, thereby achieving exceptional catalytic performance. Density functional theory (DFT) calculations demonstrate that the electronic synergistic interaction between Pt and α-Co(OH) 2 -B reduces the adsorption energy of BH 4 - and H 2 O. The interaction further lowers the energy barrier of B-H bond cleavage as the rate-determining step, thereby accelerating the hydrolysis rate of NaBH 4 . This work provides an innovative approach for the development of green hydrogen production catalysts.
研究领域:
材料科学
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催化化学
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2018
·
IF 5.116
Xuedong Wei,Na Li,Xianming Zhang
Two kinds of three-phase composite materials, Co/Co(OH) 2 /C@B directly from ZIF67 modified by NaBH 4 and Co/CoO/C@B through pyrolyzation of Co/Co(OH) 2 /C@B material, are successfully synthesized and used as catalysts for the oxygen evolution reaction (OER). The structure and morphology are mainly characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS). HBZ-1 sample with the structure of Co/Co(OH) 2 /C@B has the best onset potential of 1.075 V vs. RHE at 0.1 mA cm −2 and the best catalyst stability among all of the materials researched. Especially as its pyrolyzing product, the CBZ-1 sample with the structure of Co/CoO/C@B behaves the most excellent synthetically electrocatalytic performance with low onset potential of 1.444 V vs. RHE at 0.1 mA cm −2 and a small overpotential of 390 mV at 10 mA cm −2 , which is better than that of RuO 2 . This good catalytic activity is mainly attributed to the generation of CoO phase and synergistic effect of all the phases in the composite structure. Furthermore, the CBZ-1 sample has the appropriate catalytic stability which attributed to the three-phase structure of Co/CoO/C@B composite and the existing of a little B element.
研究领域:
材料科学
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电催化
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纳米材料
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能量转换
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无机化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
·
IF 7.139
Luyan Shi,Ke Zhu,Yuting Yang,Yi Liu,Shoulei Xu,Tayirjan Taylor Isimjan,Xiulin Yang
Designing a cost-effective and high-performance catalyst for NaBH 4 hydrolysis is a significant step in developing a sustainable hydrogen source . Herein, we prepared a cost-effective Ru-clusters decorated cobalt-cerium oxides coating ZIF-67 (Ru/Co 6 Ce 1 @ZIF-67) catalyst via a facile reduction method, displaying high performance and exceptional reusability in alkaline NaBH 4 solution. The optimized catalyst exhibits a high hydrogen generation rate (HGR, 5726.1 mL min −1 g −1 ), turnover frequency (TOF, 413.9 mol H2 min −1 mol R u − 1 ), and low activation energy (E a , 53.0 kJ mol −1 ), surpassing most of the recently reported catalysts. Furthermore, the catalytic performance does not change considerably after five cycles, indicating the catalyst's multi-cycle reusability. Studies imply the uniquely synergistic effect of Ru, Co/Ce oxides, abundant oxygen vacancies , as well as the porous nanocube structure, enabling the catalysts to possess high metal dispersion, outstanding catalytic performance and exceptional reusability. This work will open light on using an oxygen vacancies-rich strategy to design a high-activity catalyst for promoting NaBH 4 hydrolysis.
研究领域:
催化
·
材料科学
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能源材料
·
纳米技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lanlan Guo,Wei Zhao,Linlin Dong,Xin Shi,Guodong Wang,Rui Li,Jianliang Cao,Xueli Yang,Xiaolian Liu,Yan Wang
The construction of high-performance sensitive materials is a basis for excellent sensors. Among prior SnS 2 -based sensors, high sensing performance often accompanies high operating temperatures or expensive costs, which limits their practical use. Herein, we employed Sr doping and NaBH 4 treatment strategies to increase the S-vacancies content in the SnS 2 microflowers. Particularly, this composite sensitive material shows large specific surface area, low crystallinity and rich S-vacancies content, which enables this sensor excellent sensing properties toward NO 2 , with a response of 4.7 toward 5 ppm NO 2 at 100 °C. In addition, this sensor has a low detection limit for NO 2 as low as 0.2 ppm, which is a lower value compared to many SnS 2 -based NO 2 sensors as reported. XRD, SEM, TEM, EPR and BET characterization combined with density functional theory (DFT) calculations are adopted to illustrate the enhancement mechanism toward NO 2 of the composite sensitive materials fabricated in this work. This study provides new ideas and scientific basis for the construction of metal sulfide based NO 2 sensors, which has important theoretical significance and application value.
研究领域:
材料科学
·
传感器技术
·
计算化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）